Convertible automobile



FIG. 1 is a front perspective view of a convertible automobile;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof, on a reduced scale;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a left side elevational view thereof, the right side is a mirror image, on a reduced scale. 

An ornamental design for convertible automobile, as shown and described. 